Which BL point is on the lateral aspect of the trapezius muscle, 1.3 cun lateral to Yǎmén DU-15?

• A. BL-10
• B. BL-9
• C. BL-11
• D. BL-12

Answer: (A)

This question tests exact point location along the back-bladder pathway, focusing on a point that sits on the lateral edge of the trapezius. BL-10, called Tianzhu, is placed in the depression on the lateral aspect of the trapezius, about 1.3 cun from the midline point Yǎmén (DU-15). That precise description—lateral to DU-15 and on the trapezius—is what defines BL-10.

Understanding this helps: the bladder channel runs up the back and has several points scattered around the upper back and neck. BL-10 is the classic location for addressing neck stiffness and occipital tension because it sits right at that outer trapezius area. The other points listed lie in different back or scapular regions and do not fit the described spot on the lateral trapezius that is 1.3 cun from DU-15.